🎨 Palette: Add accessible aria-label to settings navigation link

[anchapin]

• 💡 What: Added an aria-label to the settings icon link in the top navigation, and wrapped the visual emoji with <span aria-hidden="true">.
• 🎯 Why: This improves accessibility for screen readers by providing a descriptive label instead of reading the emoji character out loud.
• 📸 Before/After: Visual changes are not applicable, this is a screen reader accessibility change.
• ♿ Accessibility: The screen reader will now read "Settings" instead of "Gear" for the settings navigation link.

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PR created automatically by Jules for task 320742299427355609 started by @anchapin

Summary by Sourcery

Improve accessibility of the top navigation settings link by providing a descriptive ARIA label and hiding the decorative emoji from assistive technologies.

Enhancements:

• Add an ARIA label to the settings navigation link so screen readers announce it as “Settings” instead of reading the emoji.
• Mark the settings gear emoji as aria-hidden to treat it as purely decorative for assistive technologies.

[google-labs-jules]

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[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Adds an accessible aria-label to the settings navigation link and updates the top navigation links config and rendering logic to support optional aria labels for links.

Flow diagram for TopNavigation link configuration with optional ariaLabel

flowchart TD
  A[TopNavigation_component] --> B[Define_navigationLinks_array]
  B --> C[Link_home_to_/]
  B --> D[Link_experiments_to_/experiments]
  B --> E[Link_results_to_/experiment-results]
  B --> F[Link_docs_to_/docs]
  B --> G[Link_settings_to_/settings_with_label_span_aria-hidden_true_and_ariaLabel_Settings]

  H[Render_navigation_links] --> I[Iterate_over_navigationLinks]
  I --> J[For_each_link_create_Link_component]
  J --> K[Set_Link_to_property_from_link_to]
  J --> L[Set_Link_content_from_link_label]
  J --> M[Set_optional_aria-label_from_link_ariaLabel]

  A --> H
  B --> H

Loading

File-Level Changes

Change	Details	Files
Add support for optional aria-labels on top navigation links and apply it to the settings link with a hidden gear emoji icon.	Extend navigationLinks items to optionally include an ariaLabel field in addition to to and label Wrap the visual gear emoji for the settings link in a span with aria-hidden="true" so it is ignored by screen readers Provide an ariaLabel of "Settings" for the settings navigation link for screen readers Update the navigationLinks map callback to destructure ariaLabel and pass it through as the Link aria-label attribute	frontend/src/components/TopNavigation/TopNavigation.tsx

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[sourcery-ai]

Hey - I've left some high level feedback:

• Consider updating the type definition for navigationLinks (and any related props/interfaces) so that label can be a ReactNode and ariaLabel is explicitly typed as an optional string, which will make this pattern clearer and prevent implicit any usage.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- Consider updating the type definition for `navigationLinks` (and any related props/interfaces) so that `label` can be a `ReactNode` and `ariaLabel` is explicitly typed as an optional string, which will make this pattern clearer and prevent implicit `any` usage.

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[Copilot]

Pull request overview

This PR improves the accessibility of the Top Navigation settings link by ensuring screen readers announce a meaningful name (“Settings”) instead of reading the gear emoji.

Changes:

• Replaced the settings link’s emoji-only label with an emoji wrapped in aria-hidden="true".
• Added an explicit aria-label="Settings" for the settings navigation link while leaving other links unchanged.